The Argentine has been outstanding for Lazio this campaign.
"I think [Pioli has been] almost essential," agent Enzo Montepaone told Calciomercato.it.
"He's given him time and confidence, and the results are good right now. His technical preparation is dragging Lazio through victories.
"We are admiring Lucas for many reasons. He's a major player and always has been over the years. I am convinced that he can grow further. He's a great champion and always tries to improve.
"He's one of the best [in his position] in Europe, but the numbers and performances speak for themselves. Biglia started at the World Cup and is very important for Argentina.
"He reached the final against Germany and was involved. Now he's continuing to prove himself at Lazio."
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